Rem krag?

[skollie]

Het n paar gemengde disc brake sets gesien (bv. xtr lever met hygia calipers) Het toe net gewonder waar sit die "krag" van die rem - in die lever of in die caliper?

[Meentb]

Hoe groter die master silinder is in die geval die lever hoe harder sal die pistons die remskoene teen die briek vlak druk. Maar hoe meer pistons in die remklamp hoe meer druk word dan op die skoen ook uitgeoefen!

 

So in terme van fiets remkrag sit dit dfnitief in die remklamp!

 

Dis wat ek dink

Edited September 8, 2012 by Meentb

[Ed-Zulu]

Die rem krag sit in die remklamp wat die remskoene teen die remskyf druk. Hoe meer silinders daar is wat die remskoen teen die remskyf druk, soos Meentb noem, hoe sterker is die remvermoeë.

 

Die handvatsel is slegs 'n hefboom wat die hidroliese olie in die remvloeistofpyp af forseer, wat dan die druk in krag omskakel as dit teen die silinder forseer word.

 

Bliksem...dis 'n mondvol!

[Bianchi]

The power of the braking force is definitely where your rotors meet your brake pads.

It's probably true that the area of contact between the rotors and brake pads is relational to the stopping power, but it's also obviously going to be determined by the friction between the pads and the rotor.

 

All your brake levers do is force pressure into the hose which in turn forces the pistons out onto the brake pads between which the rotor is pinched.

[skollie]

Thanx vir die reply

 

So as die budget knyp is dit beter om vir beter calipers te gaan as vir beter levers? as ek julle reg verstaan?

[Ed-Zulu]

Thanx vir die reply

 

So as die budget knyp is dit beter om vir beter calipers te gaan as vir beter levers? as ek julle reg verstaan?

Jy verstaan die wetenskap goed!

[Andro]

maybe there is a relation between all the components ...

[kennyg]

maybe there is a relation between all the components ...

 

You indeed correct...

 

two main elements affect brake performance.

 

1. the coefficient of friction between the rotors, and the shoes and the size of the surface area

2. the force at which the the pads are applied to the rotor

 

in number one the size of the pad needs to be maximzed and the material used must be as sticky as possible to create good braking

 

in number two a serious relationship starts, between the master and the caliper.

 

a. A large master will move the pads further but require more force on the brake lever to generate the same clamping power.

 

b. In the second part of the second scenario a small master will push the same caliper pads a shorter distance but can generate significantly more clamping force.

 

There are various problems created with all the scenarios and different designers have different methods to deal with heat dissipation, cleaning of wet/dirty rotors,cylinder retuns.

 

So if you willing to mix and match your various componments make sure you apply the right mix, to get the performance you desire.

[porqui]

kennyg ....... +1

[droo]

Power is determined by the ratio of the surface areas of the master and slave cylinders and by the leverage applied by the lever to the master piston (leverage ratios), and by system efficiency (eg. flex in levers and calipers, hoses etc.)

 

Mismatch would either be felt as too much lever stroke before bite (but heaps of power) or lack of power and a short stroke.

 

Trial and error is pretty much the only way to work it out unless you feel like spending some quality time with a vernier and a calculator. For my money I'd stick with a complete set from one manufacturer.

[Andro]

I agree... was designed to work... why reinvent the wheel...

 

ps... go by a mag...

[Pieterg]

What about the rotors can I put 160mm on to save some weight.I got 180mm on now,Sorry Hi-jack

Edited September 10, 2012 by Pieterg

[Andro]

Try some Formula Rotors. 160mm weight is about 86grm. Around the R600 mark for two

 

There are very light rotors avail... Carbon Ti, weigh about 20grms lighter at +/- 2.5k each...